lack of experience will contribute to the misunderstanding that you can pound every opponent out in the first round.
sure lesnar almost lost, but his endurance was key. the dude took a hell of a beating and knew carwin was slowing down. seeing this, he went for the takedown at the right time. i see no luck involved other than the fact that he didn't get knocked out in the first round. easily comparable to the tortoise and the hare, ever heard of it?
and for the sake of you thinking you're the ish: learn proper english, it's would have/should have, not would of/should of.